exam Maths Puzzle Numerical Ability

the sum of two numbers having a ratio of 1 to 3 is 32. if x equals the smaller number, the larger one would equal?

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exam Other Question

Solve and graph

-3x - 13>-4, D = (Integers) ((-6.9+7.7)/-2 )+1

OK this one I am totally LOST. I do not no what any of this means what is the (( and the /-2 mean?? I cant even find this in my textbook. Can someone please explain to me how this problem is actually work out? Thank you much.